From eugen@grosbein.net Wed Apr 6 12:23:07 2022 X-Original-To: freebsd-hackers@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id D8AB31A92DD0 for ; Wed, 6 Apr 2022 12:23:41 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [IPv6:2a01:4f8:c2c:26d8::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KYNwF07Z9z4wwr for ; Wed, 6 Apr 2022 12:23:40 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221] (may be forged)) by hz.grosbein.net (8.16.1/8.16.1) with ESMTPS id 236CNc0l055024 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Apr 2022 12:23:38 GMT (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: egoitz@ramattack.net Received: from [10.58.0.11] (dadvw [10.58.0.11] (may be forged)) by eg.sd.rdtc.ru (8.16.1/8.16.1) with ESMTPS id 236CNCCs090960 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Wed, 6 Apr 2022 19:23:37 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: Desperate with 870 QVO and ZFS To: egoitz@ramattack.net References: <6cf6c03c5a4aa8128575ec4e2f70b168@ramattack.net> <15a86fae-90fd-951d-50e0-48f9be8b4bbc@grosbein.net> <109127fb4e43e70cd548fecde2c1f755@ramattack.net> Cc: freebsd-hackers@freebsd.org From: Eugene Grosbein Message-ID: <3b0451a3-01ec-9f30-4eb4-4cbcd91f78cf@grosbein.net> Date: Wed, 6 Apr 2022 19:23:07 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 In-Reply-To: <109127fb4e43e70cd548fecde2c1f755@ramattack.net> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT autolearn=disabled version=3.4.2 X-Spam-Report: * -0.0 SHORTCIRCUIT No description available. * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on hz.grosbein.net X-Rspamd-Queue-Id: 4KYNwF07Z9z4wwr X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=fail (mx1.freebsd.org: domain of eugen@grosbein.net does not designate 2a01:4f8:c2c:26d8::2 as permitted sender) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [0.03 / 15.00]; ARC_NA(0.00)[]; R_SPF_FAIL(1.00)[-all]; FREEFALL_USER(0.00)[eugen]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_MEDIUM(-0.79)[-0.793]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[grosbein.net]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.56)[-0.562]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_SPAM_LONG(0.49)[0.489]; MLMMJ_DEST(0.00)[freebsd-hackers]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/32, country:DE]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-ThisMailContainsUnwantedMimeParts: N 06.04.2022 19:02, egoitz@ramattack.net wrote: > Hi Eugene, > > > No... I normally don't have many delete operations..... in fact the bast majority of them are left for the night... they are done at 2,3,4 am in the morning.... > > We may have 600 deletes/sec at busy times (acording to what I see in gstat and calculating when having two masters).... As I've said, you need to monitor ALL values, there no unimportant ones on that screen. Look also at ms/r, ms/w and ms/d - that is, milliseconds per read operation, per write and per delete. Do these times grow at peak time?